From e6a08988eb5948a99d1f3b48afab4ffff01ae9a4 Mon Sep 17 00:00:00 2001 From: Nick Chan Date: Wed, 2 Oct 2024 00:59:52 +0800 Subject: [PATCH] watchdog: apple: Increase reset delay to 150ms The Apple A8X SoC seems to be slowest at resetting, taking up to around 125ms to reset. Wait 150ms to be safe here. Signed-off-by: Nick Chan Reviewed-by: Sven Peter Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20241001170018.20139-3-towinchenmi@gmail.com Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck --- drivers/watchdog/apple_wdt.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/watchdog/apple_wdt.c b/drivers/watchdog/apple_wdt.c index 62dabf223d909..95d9e37df41cd 100644 --- a/drivers/watchdog/apple_wdt.c +++ b/drivers/watchdog/apple_wdt.c @@ -127,11 +127,11 @@ static int apple_wdt_restart(struct watchdog_device *wdd, unsigned long mode, /* * Flush writes and then wait for the SoC to reset. Even though the * reset is queued almost immediately experiments have shown that it - * can take up to ~20-25ms until the SoC is actually reset. Just wait - * 50ms here to be safe. + * can take up to ~120-125ms until the SoC is actually reset. Just + * wait 150ms here to be safe. */ (void)readl(wdt->regs + APPLE_WDT_WD1_CUR_TIME); - mdelay(50); + mdelay(150); return 0; } -- 2.51.0